Yin-Yang


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Yin-Yang is a logic puzzle with simple rules and challenging solutions.

The rules are simple.Yin-Yang is played on a rectangular grid with no standard size. Some cells start out filled with black or white. The rest of the cells are empty. The goal is to color all cells in such a way that:
1. All black cells should be connected orthogonally in a single group.
2. All white cells should be connected orthogonally in a single group.
3. 2x2 areas of the same color are not allowed.

These 3 simple rules lead to some complex deductions, which are not so obvious. There are 2 important lemmas based on them, without which even the easy Yin-Yang puzzles seem very hard or even impossible to approach. You can learn these lemmas in the video tutorial below.

Video Tutorial
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Yin-Yang


6x6 Easy Yin-Yang | 6x6 Normal Yin-Yang | 6x6 Hard Yin-Yang | 10x10 Easy Yin-Yang | 10x10 Normal Yin-Yang | 10x10 Hard Yin-Yang | 15x15 Easy Yin-Yang | 15x15 Normal Yin-Yang | 15x15 Hard Yin-Yang | 20x20 Easy Yin-Yang | 20x20 Normal Yin-Yang | 20x20 Hard Yin-Yang | 25x25 Easy Yin-Yang | 25x25 Normal Yin-Yang | 25x25 Hard Yin-Yang

This Month
1. Dorice
245
00:43.37
2. Solander
61
00:50.16
3. boru
105
00:54.42
4. AnonyMinor
55
01:08.02
5. qobi
229
01:31.09
6. Wuni14 01:38.88
7. linyemusha
9
01:43.72
8. AlexanderIII 01:45.57
9. gabobr
41
02:08.34
10. Samm
12
02:28.76
11. Lady
62
03:24.52
12. Drongo
11
03:31.81
13. nyahgust
5
05:57.06
14. Kodakuna
14
06:31.55
15. slyguy519
53
08:28.01
16. swimcade
18
24d 19:16:10.37
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This Week
1. Dorice
245
00:43.37
2. boru
105
00:54.42
3. AlexanderIII 01:45.57
4. Samm
12
02:28.76
5. nyahgust
5
05:57.06
6. slyguy519
53
08:28.01
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Today
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MO3
1. numbrr
298
00:22.73
2. daanbe
216
00:26.97
3. Make
273
00:27.07
4. vowels
216
00:27.25
5. Deglis
49
00:29.77
6. ThePipeline
86
00:29.88
7. vx14
148
00:32.73
8. haramey
231
00:32.92
9. Noridice
127
00:34.59
10.anonymous
89
00:36.01
AO5
1. daanbe
216
00:27.12
2. numbrr
298
00:27.15
3. vowels
216
00:27.41
4. Make
273
00:29.62
5. Deglis
49
00:29.77
6. ThePipeline
86
00:31.46
7. haramey
231
00:32.08
8. vx14
148
00:33.98
9. Noridice
127
00:36.08
10.anonymous
89
00:36.97
AO12
1. daanbe
216
00:30.03
2. Make
273
00:31.66
3. vowels
216
00:32.32
4. numbrr
298
00:32.47
5. Deglis
49
00:33.23
6. ThePipeline
86
00:34.56
7. haramey
231
00:36.23
8. Noridice
127
00:39.37
9.anonymous
89
00:39.47
10. Ailurus
176
00:40.14
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.354
2.Paul Bismuth
1
00:14.508
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* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-08-20 08:07:14

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